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Physics
Classical Physics
Optics
Geometrical Optics: Explaining the Effects of Small Wavelengths
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[QUOTE="DaveE, post: 6830705, member: 644223"] OK, then you'll want to study "[URL='https://en.wikipedia.org/wiki/Diffraction']Diffraction[/URL]" which describes how waves propagate through/past restrictions (like the diameter of a lens). You can also study "[URL='https://en.wikipedia.org/wiki/Huygens%E2%80%93Fresnel_principle']Huygens Principle[/URL]". Also look for videos of [URL='https://www.youtube.com/watch?v=BH0NfVUTWG4']diffraction of water waves in a wave tank[/URL]. That's classically very similar to what light does. Basically, shadows (or light beams) always have fuzzy edges. If the object is small enough all you get is fuzz. If you have a big object, no one cares about a relatively small amount of fuzziness at the edges. [/QUOTE]
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Forums
Physics
Classical Physics
Optics
Geometrical Optics: Explaining the Effects of Small Wavelengths
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